If that’s the term those women generally use for themselves, yes. As a lesbian myself I believe a lesbian is a person who loves lesbians.
But when describing a group which contains both homosexual men and transgender women, the best and most concise term is queer.

If we want to be specific, the pink triangle was used by Nazis to identify queer prisoners who had been assigned-male-at-birth.
If we call them "homosexual men" we're using a Nazi-constructed social category.